3n+4n+15=75

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Solution for 3n+4n+15=75 equation: 



3n+4n+15=75

We move all terms to the left:

3n+4n+15-(75)=0

We add all the numbers together, and all the variables

7n-60=0

We move all terms containing n to the left, all other terms to the right

7n=60

n=60/7

n=8+4/7

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